On Wed, 30 Oct 2002, Terry Lambert wrote:
> Doug Rabson wrote:
> > On Wed, 30 Oct 2002, Terry Lambert wrote:
> > > Daniel Eischen wrote:
> > > > Patch looks correct.
> > >
> > > Please commit? 8-).
> >
> > Well I made a libc with this patch and rebuilt XFree86-4-libraries without
> > libXThrStub but I ran into problems compiling the clients. The clients
> > *require* someone in the link to supply the pthread_* symbols and libc.so
> > only had _pthread_* symbols. I added some more weak references to libc.so
> > but that just gets us back to square one.
> >
> > The problem is that the sawfish configuration tools are written using some
> > extensible lisp/scheme thing called rep. The main rep binary links against
> > libc.so so that occurs early in the list. Later on stacks of libraries are
> > loaded dynamically, some of which depend on libc_r.so. Unfortunately
> > libc_r.so is far too late in the list to get a lookin and it dies in
> > exactly the same way as before, for the same reason (calling a
> > non-functional stub version of pthread_setspecific().
>
> You need to link the library against libc_r.so instead of libXThrStub.so.
Probably not. Doing that breaks the existing 'feature' of being able to
use X11 in entirely non-threaded programs. I'm not sure whether that is
acceptable. It also stops programs from being able to select between
several thread implementations, of which -current has two.
I think the only sensible solution to this problem is for libraries which
provide an actual pthreads implementation (rather than a set of stubs) to
define strong symbols. Wierd debugging wrappers can still be achieved via
some dlopen/dlsym hackery.
--
Doug Rabson Mail: [EMAIL PROTECTED]
Phone: +44 20 8348 6160
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